Decorative headlamp



FIG. 1 is a perspective view of an decorative headlamp illustrating our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a top side view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a rear view thereof. 

The ornamental design for a decorative headlamp, as shown and described. 